股市资金流向图：今日沪深两市主力资金净流出18.58亿元，占比0.12%；大单资金净流出49.34亿元，占比0.33%；小单资金净流入66.10亿元，占比0.44%。

Group 1 - The core point of the article indicates that the main funds in the Shanghai and Shenzhen stock markets experienced a net outflow of 1.858 billion yuan, accounting for 0.12% [1] - Large single orders saw a net outflow of 4.934 billion yuan, representing 0.33% [1] - Small single orders recorded a net inflow of 6.610 billion yuan, which is 0.44% [1]